Soundtrack Credits. Grace Kelly Written by Mika, Jodi Marr, John Merchant Courtesy of De Wolfe Music. Love is a Many Splendored Thing Written by Sammy . Soundtrack Credits. Happy Together Written by Gary Bonner, Alan Gordon Performed by The Turtles Courtesy of Flo & Eddie, Inc. We Wish You A Merry. The Muppets: An Original Walt Disney Records Soundtrack is a soundtrack album released by A Spanish version of the soundtrack was released as Los Muppets: Banda Sonora Original de Walt Disney Records on December 6,